He climbed 'aboard' just as the train was leaving.
Everyone 'aboard' was injured in the accident.
She got 'aboard' [='on board'] the train.
(..) My lady! My lady! Help! My lady! Help! My lady! Help! Welcome aboard, my lady. Aella will kill you for this. Aella? Be a pity to send you back to him. What do you know of Aella? (..)1958 The Vikings
(..) Send him back. That's no way to reward a man who's guided our raids. No, we'll find good use for him. Come aboard. Make sail for Long Sound. Make sail for Long Sound! Ragnar! Come on. Hail, Ragnar! Hail, Ragnar! (..)1958 The Vikings